Technical cinq sporting - intermittent power loss

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Technical cinq sporting - intermittent power loss

PutoDiablo

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Hello from Spain!

So, a few weeks back i bought myself a little 95 cinq sporting. I bought itcause of the rising fuel prices so i could save money on fuel - my other car is a truck.. And driving 100km a day in that thing makes your salary ridiculously low..And remember, im already living in spain on a spanish salary - so imagine that.. ;)

Anyways. I chose the cinq sporting cause life is too short for boring carsand i used to own a sei sporting years ago when they were quite new. I actually dont even remember the years i had it or the actual year of the sei. Kinda weird actually -butiremember i wasnt all that happy with it. But im sure it was because i came from having a 160 BHP civic VTI hatch before the sei.

Anyways, back to te cinq. I have noticed a week back or so, the revs were a little on the high side. Not when cold - but when warm. When cold, it stutters a bit when u tap the speeder a bit, like its gettinga bit much fuel..

But today on my way to work it stalled/bucked/ lst power intermittendly - in a roundabout of all places where i had t be fast (im drivingin spain - its always requires a heavy acceleration from a standstill) i revved up and released the clutch and suddeny i was accelerating-deceerating on/off several times within seconds, jumping like an idiot and scared as f**k cause i was going out in front of a really huge SUV with entertaining jumping - but very little speed..

I kept going, and cruising along the motorway it kept losing power at times - just to come right back.

I idrove it home, and i have tried to provoke the situation to find out what circumstances it happens. But im baffled, cause i really cant figure that out. One time at crusing with 100km/h under no load at all.. simetimes but very far from always under hard /medium acceleration with revs around the 4000..But also after the off ramp with 20 km/h in 3rd with as little throttle as possible just maintaining speed if even that..

One thing i do know is that when idling.. nothing happens. At the moment idling is around 15 to 1600 - sp no throttle is needed to just put it in gear and roll along.. But nothing happens there..

Tomorrow ill have a look in the garage. But im really unsure where to start. And this is why i askk u guys. I feel it unlikelythat it can be a vacuum hose or something like that, when the issues are s sporadic? I mean i leak is normally pretty constant. No fine and then not.

But please advise me on what to check first. . Cause im thinking everything from ground connection to crap in the fuel filter...

I did give it a little service when i got it. I flushed the cooling system, put new antifreeze, new oil/oilfilter, new fuel filter & air filter. And i did not put the fuel filter on backwards or something. I actually checked if i had been sleepingthat much when i changed it...

Thank in advance, and may i say i already find this on heck of a goldmine of info. I searched the forum for this and came up emtyhanded. But it might be that im danish and "bucking/stalling" might be terms that are are bit off when describing what happens.

Cheers :worship:
 
And then, maybe the throttle body. Idling at that speed suggests either the throttle position sensor, an overtight throttle cable, someone playing about with the butterfly stop, a seized throttle cable, the rubber nipple on the throttle cable doing something it shouldn't or some kind of inlet leak.

On the economic question, you might consider moving to Barcelona before the Catalans declare independence: lots of coverage on it on Russia Today tonight, including a rumour that Madrid is ready to send troops in. :(
 
Strange, i replied to you post fingers, but its not here?

Anyways, i am looking for a previous post where i can find the grund/earth connections but i can find that. Anyone care to link?

I ordered a haynes manual the same day as i bought the car but its still not here. Which is kinda weird actually..

Thanks in advance!

Ole
 
I jusr cleaned 2 earth connections. I used a little steelbrush to clean them up real good - although they actually looked pretty good. BUt i only found 2. The one from the gearbox and another that joins in with some wiring, so i actually dont really know what that belongs to. They were located on each side behing the lights.

Is there more? I cant sem to find more. And, i took off the battery while i did it, and i see 1 hour mentioned a lot. So for the CPU to reset, i should leave it off for an hour at least? And do we agree that it should be done to see if my cleaning had any effect?

I also checked the throttle body a bit. I have not checked where all the hoses go - i have never seen so much "crap" on a TB before honestly. So i need to study a bit before i check that.

But, what i did find, was that it looks a bit like the butterfly is settling on a small angle. Making me far from convinced that it shuts properly. It goes all the way to the stop, so its not the cable or anything - it settles fine. But again, when i check it with my flashlight i find it looking like its a bad fit maybe getting caught on an edge or something. But its very very little. And i noticed there is a little "screw" - actually not even sure its a screw, but looks like it has threads -thats there the butterfly assembly "rests". I would like to try and se it i can get the butterly to rest in a better position. But seems like its not means for adjustment.. ?

What also supports that, is when i turn it on, it really sounds loud. The sucking seems pretty eccessive IMO.Sounds like a lot of air entering.. BUt again, i dont know these cars. So that might be normal.

Another thing.. I can litterally see the gas from the injector. I can see it on the walls of the TB. it surprices me a little, as it seems like a lot of gas for idling... I would expect not to see the gas actually . please comment. :)

Please advised guys. Thanks.
 
Ok, thanks. I was just wondering as i have never seen a SPI before - and actually see the gas. Thats a new for me :)

Anyways. I cleaned the grounds (the 2 i found - please tell if there is more) and reset the ECU - i got the idling spped down to 1200 with the airbox off. Well it says 1200 on the gauge but not sure how precise it is. Idling sounds pretty ok now actually. Also after i took a spin warming up the engine. Normally when its warm it would sit at around 15-1600 - but not now.


Bad thing is its still doing the same. Im a little stuck now. I need that manual.

But its not all bad. I payed a good price for the car at a dealer who in return gave me a year warranty, and it will get picked up next week. No need for fiddling about when i payed someone to take care of it really.. :) Im thinking it the coil packs - or a bad connection to the coil pack/s. As it feels like an on/off swich on the motor. But i dont know at this point. But it does seem to smell like gasoline a bit much .. Anything spring into mind mentioning that?

I hope i get something out of this warranty. Used car dealers are usually trying to screw with people.. Dont have much faith in them really..


Thanks in advance!
 
No plug for my iac valve?

Ok.. So just came up from the garage.

I wanted to clean the IAC valve - it was gunky alright.. But whats worse. Its not plugged in! And i cant even find the plug?

Can anyone please tell what part of the wiring it should come from? Im looking and looking but i dont see any plug.. ???

And i guess that solves my high idle issue - welkl not solve it. BUt without a plugged in IAC valve.. Well. Doesnt seem that odd anymore the idling is off..

? This is so weird.. Im having a feeling my cinq is some kinda frankenstein made from scraps..
 
i think i got it now.. :)

Found the plug for the stepper.. Now idling high again.. :eek: .. resetting the ECU now. ;)

I checked the coil pack connections.. And i think i found the culprit. Both plugs wires are exposed.. :/ The insulation has cracked exposing the copper - both wires & both plugs.. Now i gotta sort that out.

But i think this is the problem. Im guessing i gotta "spontanious" short at times. High revs, low revs.. I was jiggling the leads in idle before and seemed like i could make the motor fart a bit - makes sense as the leads lie right on top of the coil connection wiring.. So im guessing the movements og the running motor could provoke shorts.

Just had a quick look ast the plugs, are they easy to take apart so i can change the wires?

I sure hope this is whats wrong..

THanks,
 
Oh, its not the leads for the plugs that are faulty. Its from the wiring harness to the coils themselves. The plug leads looks okay. :)

I just did a sort if ghetto fix on the wiring - gonna put on the - on the battery and start it up again in a few mins - if that goes fine (read if my idle speed is normal) ill take it for a spin to see if this "dying for a sec at a time" has been rectified..

I sure hope so. :)
 
Plenty of slack :) Idle sits better now - sounds fine - playing it by ear. But shows around 1100 maybe. BUt im not too confident in the gauges on this thing. I dont believe theyre that reliable. But idle speed sounds good now.

THe "ghetto fix" didnt really work. I think its better, but need more testing before im sure. BUt now i can provoke the powerloss. Full throttle from kinda low rpms makes it "bog down" and "wake up again" at times. When just driving i dont notice anything though. BUt fault is still present for sure.

Either a proper fix on the worn out wires will do the trick or something more is up.

For now ill leave it and ask the dealer to take care of it. I know enough now to tell whats not good and so on.. :)

Ill keep u posted on the progress. Thanks for being persistent, fingers..

Ole
 
Faulty throttlebody??

My missus talked to the deaer and he said they replaced the TB... As a fix for my problem..I just dont get it. He didnt say "one of the things on the TB".. But te TB itself..

I dont really know what to think about that.. I dont really belive its the TB itself... I mean. In my mind thats sort of weird..

Anyone knows of TBs "getting ruined"... ???
 
Re: Faulty throttlebody??

I read this thread with interest as I have a very intermittent symptom very much like the one you describe...right from brand new. Once in a while especially when crawling in traffic, my Sei goes into this same sort of "Kangaroo mode" as if it cant make up its mind whether to go into overrun fuel cut out , and it takes throttle to recover from this which is not always good in heavy traffic. if left to idle along its perfect but as described its unnerving and makes me look like an idiot lurching around! I will check earthing asap...perhaps that has also something to do with the power steering having a mind of its own in the same way?....Just as well its a fun car or else it would be tedious to say the least!
 
Re: Faulty throttlebody??

My guess is that the power steering is likely to be an earth fault.

I think this is a different issue to the OPs.

In your case, try rallycinq's old trick of using a single jump lead from battery negative to something substantial (and metal!) on the engine. You might want t5o use gaffer tape to secure it.

Any improvement?
 
They can probably get so gummed up that little short of a vapour blast will get them really clean. And then there are the sensors and injector and fuel pressure regulator.

Give it a go and report back.

I checked the TB before i didnt wanna mess around with it myself as i have warranty. the TB wasnt really gummed up badly, and i Cleaned the diff. sensors.

I could very well imagine its the TPS, injector or preassure regulator being faulty. Any of those could make it act like it does. Im guessing they chaged the whole thing with sensors and all from the scrappy.. Instead of using time investigating.. But ill know tomorrow when i pick it up.

I dont trust people here in general. Its only gotten worse with the crisis and all, so i honestly dont have much confidence in them not trying to pull my leg... So im gonna test drive it really well before i accept taking it back. If its not alright i can find out pretty fast as i can kinda "provoke" it to happen.. Besides, im going to home to denmark on holidays on sunday so he can keep it another week without it being a PITA .. For me.. :D

Ole
 
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